Lesion-Entry Wire Geometry for Precise Alignment and Torque Transfer
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Solution Overview
Problem
In existing medical devices, the positions of the first and second portions of the wire are not easily determined where they face each other, leading to difficulties in precise alignment and operation.
Innovation Solution
A medical device with an elongated main body part and a leading portion, featuring a first portion with a curved surface facing a planar second portion, allowing for easy determination of their positions and improved alignment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the first portion and second portion of the wire face each other in the main body part, then the device can maintain structural integrity, but the positions of the first portion and second portion are not easily determined
Solution Approach 1:
The patent applies different surface characteristics (curved surface on the first portion, planar surface on the second portion) to enable visual differentiation and easy position determination. This allows operators to clearly identify the locations of the first and second portions when they face each other, resolving the measurement precision issue while maintaining structural integrity.
Solution Approach 2:
The patent creates asymmetry in the wire portions by giving the first portion a curved surface and the second portion a planar surface. This asymmetric design makes the positions of the first and second portions easily distinguishable and determinable, solving the technical problem without compromising the structural integrity of the device.
2Device complexity
If the wire portions are positioned without clear surface differentiation, then the device structure is simpler, but alignment and operation become difficult
Solution Approach 1:
The patent applies different surface qualities (curved vs. planar) to specific local portions of the wire. This localized differentiation provides clear visual cues for alignment and operation without requiring complex overall structure, thus improving ease of operation while maintaining structural simplicity.
Solution Approach 2:
By creating distinct surface characteristics (curved and planar surfaces) on the wire portions, the patent provides visual differentiation that enhances alignment ease during operation without significantly increasing overall device complexity.
3Ease of manufacture
If the first portion and second portion face each other without surface differentiation, then manufacturing is easier, but torque transmissibility and alignment precision are reduced
Solution Approach 1:
The patent introduces asymmetry through different surface types (curved and planar) on the wire portions. This asymmetric design improves alignment precision and torque transmissibility while remaining compatible with standard manufacturing processes, thus not significantly compromising ease of manufacture.
Solution Approach 2:
The patent applies different surface qualities to specific local areas of the wire portions. This localized differentiation enhances alignment precision and torque transmission without requiring complex manufacturing processes, maintaining ease of manufacture while improving precision.
Data Source
AI summary
A medical device includes an elongated main body part and a leading portion that is connected to a distal end of the main body part and can enter a lesion. The main body part and the leading portion include a wire. The main body part includes a first portion of the wire, and a second portion of the wire that is different from the first portion and that has a portion facing the first portion in a first direction intersecting an axial direction of the main body part. The leading portion includes a third portion of the wire that is different from the first and second portions and is located between the first portion and the second portion of the wire. A surface of the first portion facing the second portion is a curved surface. A surface of the second portion facing the first portion is a planar surface.